I have three servers and I want to set up Ambari. Unfortunately I have CentOS7 which currently isn't supported by Ambari. So I decided to use docker to overcome the OS dependency. I have found various docker-based Ambari version like this and this. The second one seems to be really good and easy to install on one host creating a pseudo-cluster, but I failed to install it on different hosts. I followed the described steps one by one trying to adjust them to the fact that I am not one the same host but when I try to assign a new host I get an error that the hostname is not valid.
For the first solution on the other hand, I can't understand the following. How can I make the containers on each host be aware of each other? Because Ambari needs every host to can ssh each other without password.
Excuse me in advance for my lack of expertise in this domain. Any comment would be very useful.
Ambari 2.2+ can be installed successfully and works fine on CentOS 7. Then you can install HDP 2.0+.
The links in your question try to install 1.6 and 1.7.
My configuration is like this:
Centos 6.3
Plesk 11.5
PHP 5.4.18
Apache 2.2.15
PHP API: 20100412
Server API: CGI/FastCGI
I use php as fastcgi. But I want to use APC or XCache. And it seems like FastCGI doesn't work well with opcache. So I read that it is better to use PHP-FPM. So how can I enable or install PHP-FPM ?
I read some tutorials and they offer to compile apache with fpm but it seems like a big risk for me. I'm not well-informed in servers.
I'm not sure whether I use mod_fastcgi or mod_fcgid. In my /etc/httpd/conf.d/ folder I have fcgid.conf file. So I think I use fcgid. Is it correct?
My Plesk has this setting: http://s11.postimg.org/pgqxwmmr7/fast.jpg
I'm curious if I install php-fpm can it brak my webserver or will any other problem occur ?
When dealing with Apache and FPM you should be using mod_fastcgi and not mod_fcgid.
I created this documentation a while ago and it seems to have helped quite a few people in the past, so perhaps it will also help you -> https://gist.github.com/diemuzi/3849349
As for breaking the web server... That's an iffy question. Since FPM is a standalone and does not need Apache to run, it possible that your current Apache setup might need some additional "tweaking" to make it work the right way again. Furthermore, since you are running Plesk and as it does not currently offer FPM support, there is also a good chance that you could possibly break your Plesk setup.
If you were not using some proprietary control panel software to manage your server and did things the old fashioned way by manually installing (or even using packages from your distro) then all of this would be a very simple solution for you.
I am in the process of learning Ruby on Rails and things have been going smoothly - up until I tried to deploy one of my test applications to my shared hosting account.
I use Host Gator and was able to successfully create a new Ruby on Rails app via cPanel and run it. The only problem is that when you create a new app this way, it populates its directory with a blank application - as would rails new app_name locally. When I delete the files and folders in this directory and replace them with my own, then attempt to run the app, cPanel says that it is running on the confirmation page but it never actually starts. I am not receiving any error messages either.
The host seemed rather stumped, stating that it should be a matter of deleting the initial files and folders and replacing them, then running. The app works fine locally so I do not think that it is a code issue. In my research I came across Passenger, although it is way over my head and it would appear that you really need to have total control over Apache to make it all work, including ssh.
If it makes any difference, the apps I made locally were put together using an installation of Rails Installer and are scaffolded. For testing I am using a bare minimum app with about three fields in the table.
What am I missing? Any help would be appreciated.
Maximum supported versions on 26/10/2013 are:
Ruby 1.8.7
RubyGems 1.8.25
Rails 2.3.18
Anything newer than that is a near guaranteed breakage and cPanel & WHM will be incapable of utilizing it in any way, shape, or form.
We can assist you with removing your existing Ruby on Rails installations and reverting them back to cPanel supported and sanctioned versions (Ruby 1.8, RubyGems 1.8, and Rails 2). That is the only thing we can do for you at this time.
If you want to use any versions newer than this, then you will be unable to use the cPanel & WHM interfaces or management tools for it -- they simply will not work. You will then have to manually manage your RoR install by yourself through command line exclusively. None of it would fall under the scope of cPanel support.
You can use http://ndeploy.in which is a third party plugin to integrate Rails Hosting via Phsuion Passenger in cPanel .
Just to let others who is using Cpanel with rails know.
I was able to use Cpanel to create a rails app, start it, and do the redirection all within Cpanel.
Nothing to modify or change. Quite straightforward for me.
So I guess it would be easier to do the development work straight on the server itself.
Have not tried to deploy a locally developed rails to shared server, or any per se. But I'm guessing we could create rails with Cpanel and replace the files in the directory generated.
I've looked around the current answers for similar questions but still couldn't find the information I was looking for.
While there are countless guides to setting up rails, it seems there aren't that many which are up to date. The latest installation of Ruby 1.9.2 seems to come with RubyGems but I can't seem to install it by running the command gem install rails
On top of this I've read guides recommending to establish a linux environment. I'm even confused to what database to use "SQLite3" or "MySQL".
My question, is how the heck do I get Rails installed quickly on Windows 7, what database should I use with it and also whether it's worth installing a VM? Any up to date guides would also be appreciated. I'd like to have the most suitable environment to get started.
I started out with Windows, used Ruby/Rails for a month, then decided to go with Rails on Ubuntu under VirtualBox, using Putty to remote to it.
MySQL is installed on Windows (so that the VM doesn't become too slow).
All code is on VBox accessible Windows drive, everything else Rails-related is on Ubuntu.
All this lets me:
Use Ruby/Rails in it's "native" place i.e. *nix
Use my Windows 7 slick (IMO) GUI
Use my BeyondCompare, TortoiseGit
Learn linux (as mentioned below also)
Ask better questions / get more answers in the community (where everyone assumes ;) that you've either got Rails on Linux or a Mac) since everyone seems to be using *nix.
To me, it makes sense to not use Ruby/Rails on Windows, especially since hosting a Rails app will 99.999% be on a linux box. So, you will get to learn linux/Ubuntu and can be better prepared come hosting time. Bonus in resume + you won't be lost when asking questions down the road, and not wonder "is this problem installing this gem because I am using Windows?".
Also, I noticed that running things like rake was 2-3 times faster in Ubuntu than in Windows. And now I think it is good to have learnt linux. I must say linux excels at the command line, and I kind of like using it now. Linux/Ubuntu sucks at GUI (IM very strong O!).
Oh, and for Ruby/Rails on Windows, give Pik a try (it's the Windows version of RVM - Ruby Version Manager).
And just for the record, on Windows, I faced problems with installing RSpec; exceptions in WebBRICK; could not use imagemagick; and other small things I am glad to have forgotten.
The Rails Installer has recently been updated for Windows, and has the support of EngineYard to keep it up to date. But, it looks like it only installs Ruby 1.8.7 at the moment. But, it should be a good starting point.
You can read Engine Yard's announcement, and reasoning for getting the Rails Installer up to date here: http://www.engineyard.com/blog/2011/introducing-railsinstaller/
The problem with Windows is it's totally different than all the other OS's. Supporting it requires all this if WIN32 else business that's no fun at all, so support lags. And since no self-respecting developer would even want to run Rails on Windows, there's just very little incentive to keep support up to date.
Why not get a hosted Linux VM such as one at Slicehost and run your project there? The advantage of that is it's accessible from anywhere without having to set up port forwarding on your cable modem (assuming you have a static IP.)
Rails on Windows is poorly supported. And even if you can get the basic Rails environment up on Windows, you'll face various problems with many Ruby gems--they aren't tested in the Windows/Rails environment so they often have problems.
Alternatives
I use a windows machine for developing Rails apps. But I never run the apps on my win box. I did it once a couple of years ago but found it to be a waste of time since many ruby gems don't work properly on windows.
Instead, I run Linux on an old PC as my development environment. I use Samba to mount the Linux box's filesystem on windows. Then I can use Windows text editors such as UltraEdit.
Another option that doesn't require a second machine is to load Linux on a secondary partition on your windows box. You can then boot into the Linux os and run Rails there.
In the installation documentation to RoR it mentions that there are many limitations to running Ruby on Rails on Windows, and in some cases, whole libraries do not work.
How bad are these limitations, should I always default to Linux to code / run RoR, and is Iron Ruby expected to fix these limitations or are they core to the OS itself?
EDIT Thanks for the answer around installation and running on Linux, but I am really trying to understand the limitations in functionality as referenced in the installation documentation, and non-working libraries - I am trying to find a link to the comment, but it was referenced in an installation read me when I installed the msi package I think
EDIT
Thanks for the references to IronRuby lately, it is certainly a project to watch, and as it, obviously, is a .NET language, it will be invaluable if it lives up to the promises. Eventually, however, in my case, I just bit the bullet and installed an Ubuntu server.
<bias> I should've done it years ago </bias>
Here's an overview of the current issues with Rails on Windows:
Ruby and Rails are slower on Windows than they are on Unix-like OS's.
A few gems and libraries don't work on Windows.
Some Unix-isms aren't available on Windows (examples).
The community is mostly on either Mac or Linux (This is a particularly hard one to deal with; nobody wants to be alone on one island when the rest of the tribe are partying, having fun and getting along great over on the other island. Community is important. It seems that most Windows developers that start with Rails quickly switch to a Mac or Linux. However, the small community of Windows Ruby users that do persist are extremely friendly, dedicated and knowledgeable - go say hi.)
Note much of the advice that follows is now outdated due to the magnificent efforts of the RubyInstaller team in bringing stability, compatibility and performance to Ruby on Windows. I no longer have to use VirtualBox, which says a lot about how far Ruby on Windows has come.
If you want more technical detail, the following are required reading. :
Ruby for Windows - Part 1
Is Windows a supported platform for Ruby? I guess not
Testing the new One-Click Ruby Installer for Windows
Still playing with Ruby on Windows
Chatting with Luis Lavena (Ruby on Windows)
Choice quote from that last one is:
AkitaOnRails: The most obvious thing is that any Gem with C Extensions without proper binaries for Windows will fail. Trying to execute shell commands will fail and RubyInline as well. What else?
Luis Lavena: Hehe, that's just the tip of the iceberg
Having said all that, I don't find developing with Rails on Windows too painful. Using Ruby is, for the most part, a pleasure. I'd avoid InstantRails because, to be frank, it's just as easy to install Ruby properly using the one-click installer, then doing a gem install rails. If you need Apache and MySQL, WAMP is a good bet, although even these aren't required if you just stick with Mongrel and SQLite.
What I've taken to doing recently is running VirtualBox with an instance of Ubuntu Server that closely mirrors the deployment server. I map a network drive to the Ubuntu Server, then I edit and run my code directly on the VM. It uses hardly any memory (it's currently using ~43MB; contrast that with Firefox, which is using ~230MB) and Rails actually performs better than running it natively on Windows. Plus you can experiment with your virtual server in relative safety. It's a really nice setup, I highly recommend it.
Finally, here are a couple of Ruby/Rails blogs aimed at Windows users:
DEV_MEM.dump_to(:blog) (Luis Lavena)
Softies on Rails
Ruby On Windows
I found getting a development environment up and running with Instant Rails on Windows was really simple. Especially when using Netbeans or Radrails as the IDE.
Less than a 10 minute job.
What did those who struggled find to be the problem?
I've been developing Rails on a Windows PC for a couple of years and had no real problems installing back when I first started. However I recently re-built my machine and struggled to get the One-Click Ruby installer working and the latest version of Gems. So this is what I tried.
Option 1: Run a Linux Virtual Machine
I was really impressed with Charles Roper's idea of running Rails within a Linux virtual machine, and this is the route I intially went for. It all went pretty smoothly and I've been documenting it at budanters.blogspot.com. However I've been struggling with accessing the MySQL server (in Linux Virtual Machine) from the Windows host.
Option 2: Use jRuby
I recently installed the Windows version of NetBeans 6.5 Ruby bundle, and without being aware of it, this installs JRuby and the Rails gems. The IDE has a UI to install Gems, and I've now got my old application back up and running in my development enviromnent.
Update November 2009
I now use Netbeans 6.7 on Windows and in the whole I am very happy with it. The only downsides are that it installs JRuby 1.2, and I needed to install JRuby 1.3 manually to get something working (I can't remember what) and I have been completely unable to get deployment working with either Capistrano or Vlad the Deployer to work. Vlad uses Open4 which doesn't work with JRuby.
Update May 2010
Netbeans 6.8 comes with JRuby 1.4 so no longer have to fiddle around with manually installing JRuby 1.3. Also it seems that in JRuby 1.5 Open4 will now work, which means Vlad might start working.
Nobody mentioned Bitnami RubyStack yet? I've been using it for years, together with RadRails. Includes Apache, MySQL/Postgre, phpmyadmin, git etc. Optional Ruby 1.9.2/Rails 3.0b. You may also run the Ubuntu flavor of RubyStack in a VM but I haven't tried that yet.
There is a packaged installer available at http://railsinstaller.org/ which is worth checking out.
Personally I found getting Ruby + Rails up and running on windows a piece of cake. From download to browsing to my first 'HelloWorld' app took me all of 15 minutes. I didn't even bother with any of the InstantRails stuff.
Subsequently I can't say I encountered any of the reported speed problems or issues with Gems under Windows.
These guys also do a nice Ruby developers add on for Visual Studio:
http://www.sapphiresteel.com/
When I last fiddled around with Rails on windows, I used Instant Rails and found it to be a fairly painful process, except for the lack of updates to Instant Rails (which, from the look of the website is still a little bit of a problem, as instant Rails 2.0 uses ROR 2.0, while the newest version is 2.1). You might also look into the answers to this question as it mentions a number of other ways to get RoR running on windows easily.
You have windows options for getting everything up and installed, such as Instantrails:
However, my personal experience with trying to get colleagues up and running on windows is that it's a pretty painful experience. You should be able to get most (if not everything) running, but be prepared to spend a bit of time mucking round (and getting frustrated).
YMMV
I would probably recommend either Linux or Mac for rails development (but I'm slightly biased against windows, so you may need to take that with a grain of salt).
An option if you're stuck on Windows is to have virtual servers running Linux / BSD / what-have-you.
It solves lots of other problems also (allowing you to try multiple server configurations easily, etc.).
If you can't get away from windows use VMware and run some form of linux (ubuntu is popular). Your No.1 limitation will be compiled gems which do not play nicely on windows.
The majority of tutorials assume you're on some form of *nix, it's when you start to break outside of basic scaffolding when you'll feel the pain. Image manipulation, full-text search and even some db adapters will either only run on *nix or are a pain to setup.
The majority of web hosts run linux too, it's good to be developing on the same platform as your host, to avoid deployment headaches.
In general, Rails performance is a problem on Windows.
As far as your deployment setup, you can either run Rails in FCGI or use mongrel (and set up either Apache or IIS as a proxy). mod_rails (http://www.modrails.com) is the best deployment option for Rails today, but doesn't run on Windows.
You might find more luck using JRuby on Windows to run Rails in whatever JVM environment you want (tomcat, J2EE server, etc).
IronRuby isn't there yet to run Rails in a production environment, but eventually it will be aimed at running Rails inside any ASP.NET environment (IIS).
You could just use Cygwin and it's version of Ruby. That gets rid of the arguments about compiled gems not working on Windows - I've managed to compile a lot of gems that way.
The biggest limitation of running under Windows is that a lot of things are super slow.
See this thread. For a discussion.
Simple things like "script/console" and running rake tasks will take 5 times longer on Windows than they do on Linux or Mac.
Other limitations are:
No IE6 on Vista.
BackgroundRB and a many other c based gems do not work on Windows.
No passenger
I'm not a rails developer myself but I thought this may be of interest. Microsoft has released IronRuby 1.0, it's a version of Ruby that runs on the .NET platform that apparently runs 4x faster than the official Rails implementation on Windows.
http://www.drdobbs.com/open-source/224600662
Official site
http://ironruby.codeplex.com/
For a speedup you could try my loader speeder upper (helps rails run faster in doze): https://github.com/rdp/faster_require
Also checkout spork, which works in doze
Alternative of RailsIntaller is RailsFTW. The Ruby & Rails are more updated.